public class Ascll码 {
    public static void main(String[] args) {
        System.out.println((char) 65);
        System.out.println((char) 97);
        for (int i = 0; i < 26; i++){
            System.out.println((char) (65 + i) + " " + (char) (97 + i));
        }
        System.out.println('a' - 'A');
    }
}
